SQL 手册SQL 函数Scala Functions数学函数COSH本页总览COSHcosh 描述 语法 DOUBLE cosh(DOUBLE x) 返回“x”的双曲余弦. 举例 mysql> select cosh(0);+---------+| cosh(0) |+---------+| 1 |+---------+mysql> select cosh(1);+---------------------+| cosh(1) |+---------------------+| 1.5430806348152437 |+---------------------+ keywords COSH